About $3 billion and 119 miles’ worth of track construction is underway or under contract on California’s planned high-speed route that, ultimately, would stretch between Sacramento and San Diego.
Caltrans engineers are scrambling to replace Pfeiffer Canyon Bridge, a 317-ft-long, concrete continuous box-beam bridge on a key coastal highway after mudslides moved one of the support columns more than a foot, causing the span to crack and bow.
After a final, Feb. 28-March 6 maintenance stop, the world’s largest-diameter tunnel-boring machine has moved less than two blocks away from the disassembly pit in Seattle. TBM “Bertha,” churning a 1.7- mile-long tunnel for a state Route 99 replacement of the Alaskan Way Viaduct, required a stop less than 1,000 ft from the pit to confirm that the 57.5-ft-dia machine was 6 in. off course alignment.
Crews completed a permanent splice on the fractured Delaware River Bridge, which links Pennsylvania and New Jersey, one month early, allowing I-276 traffic to resume on March 9 for the first time since Jan. 20, when the crack was found on the 1.25-mile-long symmetrical truss bridge.
Oklahoma transportation officials will seek private-sector assistance to close the last gap in the Gilcrease Expressway, a highway that loops around downtown Tulsa.
In a March 8 decision, a Wayne County, Mich., judge has thwarted the latest attempt to delay construction of the $4.5-billion Gordie Howe International Bridge, between Detroit and Windsor, Ontario.
Contracting firm leaders at the Associated General Contractors of America’s annual convention report that maintaining healthy backlogs and battling workforce shortages remain their top priorities.
Airports face an annual $10-billion shortfall to meet their rising infrastructure needs, which total $99.9 billion over the next five years, an airport group says in a new report.
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